Design of triangular lattice photonic crystals using genetic algorithms | Zendy

Gong Chun-Juan | Zendy; Xiongwei Hu | Zendy

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Design of triangular lattice photonic crystals using genetic algorithms

Author(s) -

Gong Chun-Juan,

Xiongwei Hu

Publication year - 2007

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.56.927

Subject(s) - photonic crystal , hexagonal lattice , band gap , lattice (music) , dielectric , algorithm , optics , materials science , fourier transform , photonics , crystal structure , optoelectronics , physics , computer science , condensed matter physics , crystallography , quantum mechanics , acoustics , antiferromagnetism , chemistry

Genetic Algorithms (GAs) were used to design triangular lattice photonic crystals with large absolute band-gap. Considering fabricating issues, the algorithms represented the unit cell with large pixels and took the largest absolute band-gap under the fifth band as the objective function. By integrating Fourier transform data storage mechanism, the algorithms ran efficiently and effectively and optimized a triangular lattice photonic crystal with scatters in the shape of ‘dielectric-air rod'. It had a large absolute band gap with relative width (ratio of gap width to midgap) 23.8%.

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